fix(gui): keep prototype-named model context drafts safe

[luvs01]

Summary

Provider model IDs are arbitrary strings, so the Models page context-window editor can be asked for drafts keyed by __proto__, constructor, or toString. Plain record[key] reads then returned inherited Object.prototype members:

• The override input rendered an inherited object/function instead of an empty draft for a prototype-named model.
• modelWindows[modelId] = parsed on a {} record invoked the inherited __proto__ setter, silently dropping the edit instead of sending it.
• contextSnapshot.modelContextWindows[modelId] could compare a parsed draft against an inherited member rather than null.

Fixes:

• New ownRecordValue helper (gui/src/own-record-value.ts) reads only own properties via Object.hasOwn, matching the pattern already used in provider-icons.ts and ModelPriceDialog.tsx.
• The outgoing modelWindows map is now Object.create(null) — the same null-prototype record defense used in provider-workspace/usage.ts and model-inventory.ts — so a __proto__ model ID stores a real entry.
• Models.tsx stays within the file-size ratchet cap (2792 lines): the helper lives in its own module and the change is line-neutral in the page file.

No visual change: this is a defensive correctness fix in draft-map reads/writes. Rendered output differs only for model IDs that previously produced garbage input values or dropped edits.

Verification

Exact head: 4832026bb89c5e601106017fd529b116a8eed0b6 (tree 97db9144a84b4834d6d5fc23a20e5a054b0ce214), branched from dev e80e571f63a52a3dbba0edeeb576060debf14190.

• bun x tsc --noEmit — clean.
• bun run structure:check — passed.
• bun run privacy:scan — passed.
• bun scripts/file-size-ratchet.ts — passed (Models.tsx stays at its 2792-line cap; the helper is a new small module).
• bun x oxlint on the touched files — clean.
• bun test gui/tests/models-empty-provider.test.tsx — 13 tests / 147 assertions, all pass. The extended case adds __proto__/constructor/toString model IDs: the draft field renders empty rather than an inherited member, and a __proto__ override survives the picker round-trip and reaches the PATCH body as an own property. Verified to fail against the unfixed source (12 pass / 1 fail).

UI screenshot

Rendered evidence — the real Models page component (vite dev build at 0411d4166) driven against a stubbed management API, captured headless. There is no visual change for ordinary model IDs; the dialog now treats prototype-named IDs as ordinary entries.

Remaining gates

• Fork CI run 35261018247 dispatched on 0411d4166; the macos control 30-minute dispatch cap is a known limitation tracked in [Bug]: macOS control is cancelled near its 30-minute limit in full dispatch CI #4905.
• GUI-screenshot gate: screenshots attached (see UI screenshot) — rendered evidence for prototype-named model IDs; no visual change for ordinary IDs.

Review readiness checklist

Review readiness checklist

This PR stays in draft until every box below is ticked. Tick all four boxes once the requirements are met:

• All CI tests are green on my local testing. Local gates passed on this head (tsc, structure:check, privacy:scan); fork run 35297863549 dispatched on the exact head.

• I pushed my PR to the latest dev commit. The branch carries dev e80e571f6 (0 behind).

• I resolved all correct Codex and CodeRabbit findings. The proto PATCH-merge finding is fixed in d2bc19d28 with regression coverage; no unresolved threads remain.

• My PR is ready for review.

Summary by CodeRabbit

• Bug Fixes
  • Fixed context-window settings for models with names matching built-in property names, such as __proto__, constructor, and toString.
  • Model-specific drafts now display correctly, remain editable through picker changes, and are saved with the intended values.
  • Prevented inherited object properties from appearing as model configuration values when no value has been set.

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Reviewing files that changed from the base of the PR and between 0411d41 and 4832026.

📒 Files selected for processing (2)

• src/server/management/provider-routes.ts
• tests/server/management-provider-validation.test.ts

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📝 Walkthrough

Walkthrough

The GUI and management API now preserve context-window settings for model IDs named __proto__, constructor, and toString. Tests verify own-property reads, picker round-trips, Apply serialization, and PATCH persistence.

Changes

Prototype-safe model settings

Layer / File(s)	Summary
Own-property value helper gui/src/own-record-value.ts	Adds ownRecordValue, which returns a value only when Object.hasOwn(record, key) is true.
Model settings integration and validation gui/src/pages/Models.tsx, gui/tests/models-empty-provider.test.tsx	Uses own-property reads for drafts and snapshots. Stores model windows with a null prototype. Tests cover prototype-named model IDs, picker round-trips, visibility counts, and Apply serialization.
Provider PATCH persistence src/server/management/provider-routes.ts, tests/server/management-provider-validation.test.ts	Builds the PATCH merge base with a null prototype. The regression test verifies that a __proto__ override persists as an own property with value 128000.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~15 minutes

Change: Bug fix · Severity of issue fixed: Medium

Merge Risk: ⚪ Minimal · up to 48320

Prototype-named model context-window overrides are preserved through the UI and management API without an identified remaining merge risk.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 75.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 5 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the GUI protection for prototype-named model context drafts. It does not mention the related server persistence fix, but it clearly identifies the primary change.

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[github-actions]

✅ Deterministic PR hygiene checks passed.

[lidge-jun]

리뷰 · 우선순위 75 / 80

설명

이 PR은 Models 페이지(gui/src/pages/Models.tsx)의 커스텀 컨텍스트 윈도우(Custom windows) 모달에서, 모델 ID가 __proto__ / constructor / toString처럼 Object.prototype에 이미 있는 이름일 때 생기던 읽기·쓰기 버그를 막는 방어 수정입니다. 제공자(provider)가 내려주는 모델 ID는 임의 문자열이라, 이런 이름이 실제로 카탈로그에 나타날 수 있습니다.

현재 dev HEAD 2f025814f3b85a027e8c76f913b1e10f342aba5e (package 2.59.0, tip #4918 docs(devlog) 040_release.md) 기준으로 Models.tsx는 아직 평범한 record[key] 읽기와 const modelWindows = {} 쓰기를 씁니다. 그래서 (1) 초안 입력칸이 상속된 함수/객체를 문자열처럼 보여 주거나, (2) modelWindows["__proto__"] = parsed가 상속 setter를 타서 PATCH body에 항목이 안 실리고, (3) 스냅샷 비교도 상속 멤버와 숫자 draft를 섞어 변경 여부를 잘못 판단할 수 있었습니다.

고치는 방식은 이미 저장소 안에 있는 패턴과 같습니다. 새 헬퍼 gui/src/own-record-value.ts의 ownRecordValue는 Object.hasOwn으로 자기 속성만 읽습니다. 같은 습관은 gui/src/provider-icons.ts와 gui/src/components/ModelPriceDialog.tsx에도 이미 있습니다. 나가는 modelWindows 맵은 Object.create(null)로 만들어, gui/src/provider-workspace/usage.ts·model-inventory.ts와 같이 null-prototype 레코드로 __proto__ 키를 진짜 own entry로 넣습니다.

파일 크기 쪽도 의도가 분명합니다. Models.tsx는 지금 dev에서 2792줄 래칫 상한에 딱 붙어 있어서, 헬퍼를 페이지 파일 안에 넣지 않고 별도 모듈로 빼 줄 수를 늘리지 않았습니다. 페이지 파일 변경은 import + 읽기/쓰기 3곳 교체 수준으로 거의 줄 중립입니다. 시각 UI 변화는 없고, prototype 이름 모델에서만 이전의 쓰레기 값·묵살된 저장이 사라집니다.

테스트(gui/tests/models-empty-provider.test.tsx)는 모델 ID 목록에 prototype 이름을 넣고, 초안 입력이 비어 보이는지, picker 왕복 후에도 __proto__ 오버라이드가 PATCH body의 own property로 남는지까지 확인합니다. 기대 body도 객체 리터럴이 아니라 Object.fromEntries로 만들어, 테스트 자체가 같은 함정에 빠지지 않게 했습니다. types.ts/config.ts 분할 캠페인과는 무관한 GUI 수정이라, 그 이유로 닫을 대상은 아닙니다. 중복 PR도 검색상 이 주제(#4922)가 유일한 open 건입니다.

CI는 이 시점 기준 hygiene이 통과했고, resolve-pr·label·CodeRabbit은 아직 진행 중입니다. 작성자 fork run과 macos control 30분 캡(#4905) 이야기는 PR 본문에 이미 적혀 있습니다. 릴리즈 트레인(2.58.0 게시 완료 / 2.59.0 open)의 핵심 레인(hosted routing, steering, retry budgets, provider replay)은 아니지만, Models 컨텍스트 오버레이 저장 경로의 실제 정확성 버그라서 방향과는 잘 맞습니다.

라인 819 - (수정 전) {}로 만든 modelWindows에 __proto__를 넣으면 상속 setter가 먹어 저장이 조용히 빠질 수 있었다. 이 PR은 Object.create(null)로 바꿨다.
라인 821·828·2288 - (수정 전) contextModelDrafts[modelId] / contextSnapshot.modelContextWindows[modelId] 평문 읽기가 상속 멤버를 draft처럼 보여 주거나 비교를 틀릴 수 있었다. ownRecordValue로 교체됨.
gui/src/own-record-value.ts - 새 헬퍼는 짧고 Object.hasOwn 패턴과 맞다. 다만 저장소에 동등한 인라인 호출이 이미 여러 곳 있어, 장기적으로는 공통 유틸 위치로 모을지 여부는 선택 사항이다.
Models.tsx openContextSettings / useState - contextModelDrafts와 contextSnapshot.modelContextWindows 초기·세팅은 여전히 일반 {} / Object.fromEntries다. 읽기는 헬퍼로 막혔고 fromEntries는 __proto__를 own으로 넣지만, 방어를 한 겹 더 쓰려면 drafts/snapshot도 null-prototype으로 맞출 여지는 있다(필수는 아님).
PR 본문 경로 - ModelPriceDialog.tsx라고만 적혀 있으나 실제 checkout 경로는 gui/src/components/ModelPriceDialog.tsx이다. 코드 버그는 아니고 설명 정확도만 살짝 어긋난다.
CI - hygiene 외 게이트가 아직 pending이다. fork macos control 캡은 #4905로 알려진 제한이라, 그 한 줄만으로 이 PR을 막을 필요는 없어 보인다.

메인테이너의 판단이 필요한 지점

• drafts/snapshot 맵까지 Object.create(null)로 통일할지, 아니면 지금처럼 읽기 헬퍼 + 송신 맵 null-proto만으로 충분한지
• ownRecordValue를 GUI 공용 유틸로 승격할지, 이번처럼 Models 전용 작은 모듈로 둘지
• fork CI의 macos control 실패/캡을 이 PR 머지 게이트에 넣을지([Bug]: macOS control is cancelled near its 30-minute limit in full dispatch CI #4905 정책과 동일 취급할지)

너의 추천
change 없이 merge 쪽으로 가도 됩니다. 로컬로 주장한 tsc/structure/privacy/file-size-ratchet/oxlint와 models-empty-provider 테스트 확장(회귀 실패→수정 후 통과)이 문제의 핵심을 잘 덮고, 현재 dev(2f02581) 위의 작은 GUI 정확성 수정이라 분할 캠페인·중복 이슈도 없습니다. 권장 순서: upstream CI(hygiene 외 resolve-pr 등)가 안정되면 머지. 원하면 follow-up으로 drafts/snapshot null-proto 정렬만 별도 초소형 PR로 빼도 됩니다.

이 댓글은 grok-bot이 작성했습니다

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Actionable comments posted: 1

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• 🪄 Fix CodeRabbit comments on this PR

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Inline comments:
In `@gui/src/pages/Models.tsx`:
- Around line 819-829: Update the provider PATCH merge in the handler around
next.modelContextWindows to create windows with a null prototype before copying
entries, so assigning the "__proto__" model ID creates an own property and
persists it correctly. Preserve the existing merge behavior for all other model
IDs.

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✅ READY

• all PR quality gates passed; the review readiness checklist is complete.

Review readiness checklist

• ✅ All CI tests are green on my local testing.
• ✅ I pushed my PR to the latest dev commit.
• ✅ I resolved all correct Codex and CodeRabbit findings.
• ✅ My PR is ready for review.

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Maintainers: @lidge-jun @Ingwannu

[luvs01]

Fixed in d2bc19d28 (head 4832026bb): the PATCH merge target for modelContextWindows is now Object.assign(Object.create(null), next.modelContextWindows ?? {}), so a __proto__ model id is stored as an own property instead of hitting the inherited setter and being silently dropped while the PATCH reports success.

Regression coverage: PATCH modelContextWindows persists a __proto__-named model override in tests/server/management-provider-validation.test.ts posts the raw {"__proto__":128000} body and asserts the saved map holds __proto__ as an own property.

Local gates on this head: bun x tsc --noEmit, bun run structure:check, bun run privacy:scan pass; the focused server spec is running and fork CI was dispatched on the exact head.